Answer
Multiples of 666 are:
666, 1332, 1998, 2664, 3330, 3996, 4662, 5328, 5994, 6660, 7326, 7992, 8658, 9324, 9990, 10656, 11322, 11988, 12654, 13320, 13986, 14652, 15318, 15984, 16650, 17316, 17982, 18648, 19314, 19980, 20646, 21312, 21978, 22644, 23310, 23976, 24642, 25308, 25974, 26640, 27306, 27972, 28638, 29304, 29970, 30636, 31302, 31968, 32634
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